Home / 389,233.20-583,498.40-139,856.88

Finding the Fourth Proportional to 389,233.20, 583,498.40 and 139,856.88

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Solution

The fourth proportional to 389,233.20, 583,498.40 and 139,856.88 is: 209,659.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,233.20 : 583,498.40 = 139,856.88 : x
  2. Step 2: Convert to fraction form
    389,233.20/583,498.40 = 139,856.88/x
  3. Step 3: Cross multiply
    389,233.20x = 583,498.40 × 139,856.88
  4. Step 4: Simplify right side
    389,233.20x = 81,606,265,708.99
  5. Step 5: Solve for x
    x = 81,606,265,708.99/389,233.20
  6. Step 6: Final answer
    x = 209,659.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.